Xylem IM102 R05 Jet Pumps User Manual
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PREPARING FOR INSTALLATION
Inspect the pump and the motor assembly for shipping
damage.
Insure that you have all of the parts required for a proper
installation. See component lists for different system
types. There are shallow well, convertible shallow well,
convertible deep well – twin pipe, convertible deep
well-packer, vertical deep well-twin pipe, vertical deep
well-packer, and booster systems. See Typical Installation
Drawings and Chart 1.
Check power supply voltage and select motor voltage.
Goulds ½ hp Jet pumps are factory pre-wired for 115
volts while ¾ hp and larger are pre-wired for 230 volts.
Motors from ½ hp to 1½ hp can operate on either 115
or 230 volts. The 2 hp motors operate only on 230 volts.
See Fig. 7.
Select a site where the pump and tank will not freeze.
The pump must be within 4' of the tank to prevent
switch chatter. There should be no filters or valves, other
than a wide open gate valve, between the pump and tank.
Fluid temperature must not exceed 140° F (60°C).
GENERAL INFORMATION - PIPING
Always follow state and local plumbing codes. Goulds
Water Technology does not sell or specify pipe types or
materials, consult with your pipe supplier to determine
the best pipe for your installation. Pipes can be threa-
ded, glued, soldered, or clamped to available fittings and
adapters. If using poly pipe with barbed connectors we
suggest you double clamp all fittings to prevent air leaks.
It is very important to eliminate high spots and dips in
suction piping as they will trap air and make the system
very hard to prime. Never route the piping up above and
then down to the pump suction. Suction piping should be
either straight from the well to the pump or should slope
upward to the pump. Pumps do not “hold” prime, piping
systems and check valves do. Go to the specific section
for your system type.
SHALLOW WELL INSTALLATION -
start here
Suction Piping
The suction pipe should be at least as large as
the pump suction, typically 1¼". Use of smaller
pipe increases friction loss and increases effec-
tive suction lift. This will reduce flow and pres-
sure. On offsets over 50' we recommend using
pipe larger than the pump suction. This will
reduce friction loss and improve performance.
Install a foot valve on the end of your drop pipe if the
well is 2" or larger. Lower the drop pipe with foot valve
into the well. It is best to keep it at least 5' off the bottom
of a clean well. If you set it lower you increase the chan-
ce of pulling debris into the screen or into the pump.
On sand points or driven wells you can install an in-line
check valve near the well head or at the pump and use
the well casing as the suction pipe. The closer the check
valve is to the well the easier the system will prime.
To prevent over pumping a low yield well you can
throttle a jet pump using a ball valve in the suction line.
You should install a compound pressure/vacuum gauge
between the well and the valve. Do not throttle to more
than 22" Hg (25' lift).
In areas where freezing occurs make the transition from
vertical to horizontal below the frost line using a pitless
adapter, consult with your plumbing supplier for pitless
adapter information. In some areas they use a well seal
and a 90° elbow.
We recommend not using filters on the suction side of a
jet pump. Dirty filters increase the effective suction lift
on the pump and can starve the pump of water. This
will damage the impeller and diffuser which will affect
performance.
Install Shallow Well Adapter On Convertible Pump
Unpack the Goulds Water Technology “Shallow Well
Adapter”. Insure that the nozzle is installed in the adap-
ter. Screw the venturi (long black tube) into the adapter.
Install the gasket and bolt the adapter to the front of the
pump using the four bolts provided. Tighten the bolts
evenly to insure proper sealing and alignment of the
venturi to the impeller. Do not over tighten the bolts. See
Chart 2.
Shallow Well Pump – jet is built-in, proceed to next step.
Attach Suction Piping To Pump
Install a barbed adapter into the 1¼" pump
suction if using poly pipe and double clamp the
fitting.
OR
Thread a pipe nipple and union into the suction port to
make a threaded pipe connection. Make sure the union is
clean and well seated. Any air leak will ruin performance
and the pump will not make pressure!
Discharge Piping
Install a tee or cross tee in the pump discharge. (They
are not supplied with the pump!) Install a pipe plug or a
pressure gauge into a reducer bushing in the top port of
the tee. This will be used as the priming port.
Cross Tee - the discharge line to the home attaches to
one port and the tank attaches to the other. This is called
an Off-Line Tank installation.
Tee - you can use one line to supply the house with the
tank tee installed off the line. This is called an On-Line
Tank Installation and is most common.
Note: Goulds Water Technology HydroPro Water System
tanks are shipped with a tank installation guide. Please
refer to it for more detailed tank instructions.
Do not place valves or filters between the pump and
tank, other than a fully open gate valve or “full port” ball
valve. The most common ball valves are not full port!
Most valves and filters will create excessive friction loss
and cause “switch chatter”. Switch chatter is a rapid On-
Off cycling of not only the pressure switch but also the
motor. It will burn the points in the switch, the motor
points, and cause motor damage if not corrected. If for
Hazardous pressure can
cause personal injury or
property damage.
WARNING
Hazardous pressure can
cause personal injury or
property damage.
WARNING
PREPARING FOR INSTALLATION
GENERAL INFORMATION - PIPING
SHALLOW WELL INSTALLATION